During transportation, the products should be protected from rain and sun, avoid collision, and comply with the relevant regulations of the transportation department. Products should be stored in a cool and ventilated place to prevent direct sunlight, and be isolated from fire sources and away from heat sources. The construction site should have good ventilation facilities, and painters should wear glasses, gloves and masks to avoid skin contact and inhalation of paint mist. Fireworks are strictly prohibited on the construction site.
Main components of antirust paint
Rust-proof pigments and film-forming substances. Usually named after antirust pigments, such as red lead antirust paint and iron red antirust paint. According to its antirust function, it can be roughly divided into four categories: physical antirust paint, chemical antirust paint, electrochemical antirust paint and comprehensive antirust paint.
1, physical rust prevention
This antirust paint basically does not react chemically or electrochemically with the coated metal surface, and its antirust effect has two aspects:
Some antirust paints use fine flake materials as the main pigments. Physical antirust pigments mainly include: iron red, natural iron red, mica iron oxide, aluminum powder, graphite powder, and fine glass flake.
The coating itself is relatively stable by using chemically stable inert pigments and fillers that are insoluble in water and are not easily decomposed and destroyed by corrosive media; These pigments and fillers have good particle filling effect and few surface defects, which make the coating structure very compact, which not only increases the strength, but also reduces the permeability of water, oxygen and ions to the paint film when some pigments and fillers are used properly.
2. Chemical rust prevention
Chemical antirust paint is the main variety of antirust paint. They use all kinds of chemically active pigments to change the properties of the surface and the characteristics of the reaction products by chemical reaction to achieve the purpose of rust prevention. The main varieties of chemical antirust pigments are chromate pigments, lead pigments, organic phosphoric acid, salt phosphate pigments and so on.
3. Electrochemical rust prevention
According to the electrochemical corrosion theory, the anode with negative electrode potential is corroded in the corroded battery. If the coating on the metal has a lower electrode potential than the metal, when there is a condition of chemical corrosion, the coating is the anode and the metal is the cathode, and there is no corrosion, which is the design basis of the cathodic protection coating.
Refer to Baidu Encyclopedia-Antirust Paint for the above contents.